HCD.10:9 - Consequences

The practitioner gains a progression whose changes have interpretable purposes. Practice can expose condition-sensitive action, revisit it at relevant times, require Method selection where appropriate, and adjust support without turning every difficulty into a bundled experiment. Failed assumptions have explicit backoff routes.

The cost is more design discipline than copying a calendar or difficulty recipe. Prior attempts, intervening activity, task similarity, source and support conditions, and response rules must be recorded. Some attractive combinations remain unselected because their effects or failure meanings cannot be separated.